[Suzerain of Sheol]

I don't really know what to say. There's only so many places "supernatural" feats come from in this 'verse.

The psychic mind acting to alter the matter and energy it perceives in some manner. Psychosis.

The spiritual will channeling the essentia of the planes to enforce itself upon the local reality. Theurgy, heavenly and hellish.

Or the manipulation of the relationship between spirits and the material world. Necromancy.

I mean, that's it. I mean, tech can do some stuff that we'd see as borderline "magical", but beyond that, if someone isn't using any of the above-mentioned, nothing out of the ordinary is happening.